Are there any elements that can be connected to the 'cavity' (i.e. the space) under a stud (e.g. on a regular plate or a regular brick)? The cavity measures about 2.4mm in diameter.
So far I've only ...

I always thought this was LEGO, and played with it in my LEGOs my whole life (got this in the 80s) but found out recently that it is not LEGO. What brand is it? Who made it? He can hold lego tools, ...

We purchased a table with Duplo baseplates on top (activity table) for my son when he was 1 year old. He's now turning six and we would like to convert the Duplo top to the regular LEGO System top. is ...

Is it possible to create and run NXC programs on the EV3 brick?
I installed BrixcCC, created a simple Hello World NXC program and selected "Download and Run" in the Compile menu.
The EV3 brick made ...

I'm thinking of making a lego table but my 2 children both use different lego. My oldest uses normal lego and my youngest uses duplo. Just wondering if there is a base plate that both types of lego ...

I gather that Mega Bloks Mini Bloks are the same size as Duplo, and are compatible with it. Do any of the other major brick manufacturers make similar bricks?
Knowing the possibilities can help when ...

I am currently making the switch to Power Functions with my Lego Train collection and am wondering if I can power the old 9v motors that I used with the metal rails, with a battery box from the power ...

My husband collects the Marvel figures which come in the Mega Bloks blind bags. His birthday is coming up and I'd like to build him a display for his Marvel figures. I'd strongly prefer to use LEGO in ...

My wife bought me a Mindstorms NXT 2.0 for my birthday. I've been reading up on it from as many sources as possible however apart from the 9695 Education Resource Set which adds some additional bricks ...

I shudder when I find errant MegaBloks in my LEGO elements, but admit to admiring certain in-the-box models offered by them. I know the pictures depicted on the MB boxes are not actually photos of a ...

I have a bunch of motors and sensors from the original Mindstorms set. It seems a shame I can't use these with the more recent NXT set. Are there any unofficial modifications that allow you to convert ...

I have a small collection of Bionicle elements that I would like to incorporate into my System builds but I am a little unsure how to use them.
What are the different ways to use these two types of ...